Window-sash-operating device



J. M. FROWENFELD I WINDOW SASH OPERATING DEVICE Dec. 7 1926. 1,610,084 7 Filed August 15. 1,923

ATTORNEY Patented Dec. 1926.

UNITED. 'STAT-ESPATFENT orr ics. I

7 JAMES rnownnrn n, or nEwYonK, N. Y. I

wrnnowssesnornan'rmo Dav-ma.

a pncaaoa filed August 15,- 1923. serial-m. 657,604. I

The primary object. of my invention islto provide means whereby the u'ppersash may be lowered or raised by movements of the lower sash. r V

The invention will be understood by reference to the accompanying drawings, in which 1 ment of the invention, its action being illustrated by dotted lines, and

Fig. 2 is an endelevation'of'the same.

Fig. 3 is a. front elevation of upper and lower window sashes having .an embodiment of the invention applied thereto.

4 and 5 certain modifications of the device.

The characteristicfof my device is that when set for given operation, say forl-oweringlth'e'upper sash, the lower sash freely .movable to the desired'positlonwhereupon a reverse movement of the lower sashwill carry downward thefupper sash. It is desirable that the device be duplicated at each side of thewindow sash as shown in- Fig. 3 to provide balance so as to prevent jamming. Each device is] referablyconstructed in aceordan'c'e'with igs l and '2. ence to those figures it, willbe seen that the member caried byfthe lower sash. and which engages the uppersash to operate'the same consists of a'cam'l carried at theleindzof a in turn is supported within the bearing apertures of'a bracket?) {secured shaft 2 which by screws 4: to the top of the lower sash.

To shaft 2 at ,its'end opposite earn 1 sfsecured, transversel a' bent rod 5, havmg a normally horizontal section 5, forming a lever, the ends of which project substant'ially beyond each side of the axis of the shaft. One end ofa spring 6 is'looped over upon horizontal lever 5", the opposite end-of the spring being secured to bracket 3 ata point in'a vertical line extendingthrough the axis of shaft 2. Thus when lever 5 is placed in horizontal position, the spring Fig 1 is a side elevation of an einbddi illustrateon side elevation,

By referceive a cord for "convenient manual operation.

v When the left-hand end of o erating rod 6 is pulled downwardly lever 5*will be so inclined that the looped end of spring'will lie in p'ositi'on to-hold the shaft 2 and cam 1 in the dotted line posit-ion, Fig.1. In that dotted line position a downward movement of lower sashwill soact upon cam 1 as to force it against upper sash B and therefore ever,a reverse movement of the lower sash will release the cam from the upper sash. and'the lower sash may freely be movedup wardly a certain distance and'then lowered sash B will be carried downwardly. Howso that the uppersash is carried downwardly the required distance.

Vhen it is desired to raise the upper sash the right hand end of operating rod *6 is pulled downwardly until-point a of the cam rests upon the upper sash whereupon'upward movement of'the lower sash will impart corresponding movement to the upper sash, and downward movement of the lower sash, will release the cam and be inactive upon the upper sash. I

' Fig. 4; illustrates a modification, a raclf' 8 bein provided on the upper sash and a rack wheel 9, 0n the lower sash, the wheel being journaled at 10 in abracket 11'; 011 bracket 11 is pivoted a'latch having two arms 12, 12

and a pintle 13 adaptedto be engaged by a friction-spring 14. The inner ends of arms 12, .12", are sharply beveled. When arm 12 is thrown into contactwith'the;.teeth of the rack wheelfit's beveled face will permit free rotation of the rack wheel in one direction,

while the wheel is held by the arm against rotation in the opposite direction. With the parts in the position shown. in Figure 4 lower sash A may be moved upwardly without effect upon the upper sash. When moved downwardly, however, the lower sash will carry the upper sash downwardly.

In Fig. 5 the modification is similar in principle to the embodiment illustrated in' Fig. '1. On a bracket 15 is pivoted a lever 16 havingarms 17,'each of which controls a. friction wheel 18 the one wheel on a shaft 19 and the second wheel on a shaft 20, the said shafts projectingthrough a circular slot 21 formed in a side wallof the bracket.

The arrangement is such that when arm 16 is moved'upwardly to the dotted line position, Fig. 5, upward movement of the lower sash will impart similar movement to the upper sash, while downward novement of the lower sash, will have no effect upon the upper sash. When arm 16 is moved downwardly from its full line position in Fig. 5 the operation is reverse in effect.

In the device illustrated in Fig. 5 the shaft 21 to which lever 16 is fixed may have applied thereto a spring and connections for holding the lever in active or inactive position, a desirable form of such spring and connections being illustrated in Fig. 1.

Referring to Fig. 1, it will be noted that shaft 2 has secured thereto a pin 2 which, when the cam 1 is in neutral position (Fig. 1) is in register with aperture 3* formed in the bracket 3 This permits transverse movement of the cam and endwise movement of the shaft to the dotted line position, so that the two sash may be moved past one another and in reverse positions, which is frequently done in cleaning the glass etc.

It will be understood that various other modifications of the device, may be made within the spirit of the invention.

Having described my invention what I claim and desire to secure by Letters Patent is as follows r 1. A window saslroperating device, com prising a movable member adapted to be carried by one sash in position to engage the second sash, said member being adustable to either one of two active positions and in each position adapted to hold the two sashes together when the first named sash is moved in one direction, and being inactive when said first named sash is moved in the opposite direction.

2. A window sash operating device, comprising a latch adapted to be carried by one sash in position to engage a member of the second sash, said device being adustable to a neutral position and either one of a plurality of active positions, and in each active position adapted to hold the two sashes together when the first named sash is moved in one direction and being inactive when said first named sash is moved in the opposite direction.

3. A device constructed in accordance with claim 1 comprising a cam, in combination with means for yieldingly holding said cam in neutralor active position.

4. A" device constructed in accordance with claim 1 comprising a cam in combination with means for yieldingly holding said cam in neutral or either one of two active positions.

5. Means for operating an upper sash which comprises a cam adapted to be carried by a lower sash and having an intermediate meutral point and an active face at each side thereof, in combination with means for operating the cam for engagement of eithei face thereof with the upper sash.

6. A device constructed in accordance with claim 5 in combination with a sprlng and means connecting the same to the cam whereby the latter may be yieldingly held in either neutral or active position.

7. A device constructed in accordance with claim 6 in combination with a shaft which supports thecam and an operating rod connected to said shaft and extending at opposite sides thereof.

8. A window sash operating device, comprising a latch device adapted to be carried by one sash in position to engage a complementary latch member on the second sash. saichdevice being adjustable tov either one of two active positions and to a neutral posi tion, and in each active position being adapted to hold the two sashes together when the first named sash is moved in one direction and being inactive when said first named sash is moved in the opposite direction.

In testimony whereof, I have signed my name to this specification.

JAMES M. FROWENFELD. 

